| 摘要 |
PROBLEM TO BE SOLVED: To limit or cancel reduction of an assistant torque of a power steering means when a vehicle is running on a curve path with more than a predetermined curvature. SOLUTION: A road condition data in a travelling direction is obtained from a navigation means (S1), and when existence of the curve path with more than a predetermined curvature is judged (in S2, YES), an entry prediction time to the curve path is introduced on the basis of the vehicle speed V detected by a vehicle speed sensor (S4). Even if existence of an obstacle is recognized in a steering direction (S5), when the vehicle speed V at that time is faster than a preset speed Vs (in S6, YES), curvature R of the curve path is more than a threshold Rt2 (in S7, YES), or road width W of the curve path is narrower than a preset and predetermined width Wt (in S8, YES), a limit processing of a anti-assistant torque in a direction opposite to a steering direction is executed and started T-time before the entry prediction time (S9). COPYRIGHT: (C)2004,JPO&NCIPI |
